Spike-Timing-Dependent Plasticity
STDP learning window: Hebbian (pre→post) potentiation, anti-Hebbian depression
STDP Window
A+ (LTP)
0.010
A- (LTD)
0.012
τ+ (ms)
20
τ- (ms)
25
Δt=t_post−t_pre. Positive Δt → LTP. Negative Δt → LTD. BCM-like rule when A-/τ- > A+/τ+.
Neuron Model
r_pre (Hz)
20
r_post (Hz)
20
Phase lag (ms)
5
w_max
1.00
Phase lag = systematic timing offset between pre and post spikes. Positive → potentiation.
Synaptic Weight
w = 0.50
Weight evolves in real-time. Watch it saturate toward w_max (LTP) or decay toward 0 (LTD) based on spike timing.